Improvement in stump-extractors



S. I-I. 1VI0 GIBENY. Stump-Extractor.

No. 214,831; Patented April 29,1879.

l J. I W,

ATTORNEY UNITED STATES PATENT OFFICE.

SYLVESTER H. MGGIBENY, OF WEST ALMOND, NEW YORK.

IMPROVEMENT IN STUMP-EXTRACTORS.

Specification forming part of Letters Patent No. 2] 4,831, dated April29, 1879; application filed 1 April 8, 1879.

To all whom it may concern: Be it known that I, SYLVESTER H. Mo- GIBENY,of West Almond, in the county of Allegany and State of New York, haveinvented certain new and useful Improvements in Stump-Extractors; and Ido hereby declare that the following is a full, clear, and exactdescription of the invention, which will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to letters of reference markedthereon, which form a part of this specification.

Figure 1 is a view, in perspective, of my invention. Fig. 2 is a sideview, showing the elevator thrown upon the wheels for transportation;and Fig. 3 is a detached sectional elevation of the apex of theelevator.

This invention has relation to stump elevators or extractors; and itconsists of certain impror cments in the construction of the same,hereinafter more fully described, and particularly pointed out in theclaim.

In the drawings accompanying this invention similar letters of referencemarked thereon indicate like parts of the invention.

Two beams, A and B, are connected at their tops by a short stoutcross-beam, G, in such a manner so as to somewhat resemble the letter A.The short beam 0 is mortised so as to receive the tongued ends of thebeams A and B. A bolt, a, passing through each joint makes it secure,and at the same time admits of its being readily taken apart when it isdesired to do so. A brace-rod, a, connects the beams A and B aboutmidway of their length, to prevent them spreading in the act of pulling.A ring-bolt, D, passes through the short beam 0 and has depending fromit a rod, E provided at its junction with the ring-bolt D, with a linkor loop, F, and at its other end with a shorter rod, G, to the lower endof which is attached the anchor shaped hook, H, to which is attached thechain h, made fast to the stump. A third upright beam, I, is provided atits upper end with screweyes or bolts 1, for attaching it to the link F.It is also provided with a step, K, which, when in operation, comes incontact with the lower corner of the short beam 0.

The lower ends of the beams A, B, and I der sides are made of asemicircular hollow or a concave form, the hollow shape presenting alarge surface to the ground, and the ends 1 forming sharp projections,which prevent slipping. The beams A and B are provided with wheels M andN, the object of which will be fully understood by reference to Fig. 2.

The operation of the device is as follows: The extractoris laid flat onthe ground, in such a position as will place the stump between the lowerends or feet of the beams A and B. The chain h is then secured to thestump, and then attached to the hook H in such a manner as will enablethe device to begin lifting when the beams A and B have been raised toan angle of about seventy-five degrees by applying power to the rope ortackle 0. After the beams A and B have passed the center, or an angle ofninety-five degrees, the third beam, I, is so set as to take effect, andthe weight or force is partially transferred to it, and by continuingthe power at O the stump is drawn clear of the ground, the extractor andstump both falling on their sides.

Having thus described my invention, what I claim as new and useful, anddesire to secure by Letters Patent of the United States, is

In a stump-extractor, the beams A and B, connected at their top by theshort beam 0, and provided at their lower ends with the hollowsemicircular concave feet L, and further provided with the wheels M andN, in combination with the single beam I, detachably secured to theshort beam 0, and provided at its upper end with the step K, and at itslower end with the hollow semicircular concave foot L, constructed andoperating substantially as herein shown and described.

In testimony that I claim the foregoing as my own I affix my signaturein presence of two witnesses.

SYLVESTER H. MGGIBENY.

-Witnesses E. H. BRADFORD, H. J. ENNIS.

